package org.smart4j.framework.util;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.util.Properties;

/**
 * @author djw
 * @date 2017/10/24 9:40
 */
public class PropsUtil {
    private static final Logger LOGGER = LoggerFactory.getLogger(PropsUtil.class);

    public static Properties loadProps(String fileName) {
        Properties props = null;
        InputStream is = null;

        try {
            is = Thread.currentThread().getContextClassLoader().getResourceAsStream(fileName);
            if (is == null) {
                throw new FileNotFoundException(fileName + " file is not found");
            }
            props = new Properties();
            props.load(is);
        } catch (IOException e) {
            LOGGER.error("load properties file failure",e);
        }finally {
            if(is != null){
                try {
                    is.close();
                }catch (IOException e){
                    LOGGER.error("close input stream failure",e);
                }
            }
        }
        return props;
    }

    public static String getString(Properties props,String key){
        return getString(props,key,"");
    }

    public static String getString(Properties props,String key,String defaultValue){
        String value=defaultValue;
        if(props.containsKey(key)){
            value=props.getProperty(key);
        }
        return value;
    }

    public static int getInt(Properties props,String key){
        return getInt(props,key,0);
    }
    public static int getInt(Properties props,String key,int defalutValue){
        int value=defalutValue;
        if(props.containsKey(key)){
            value=CastUtil.castInt(props.getProperty(key));
        }
        return value;
    }
    public static boolean getBoolean(Properties props,String key){
        return getBoolean(props,key,false);
    }
    public static boolean getBoolean(Properties props,String key,Boolean defaultValue){
        boolean value=defaultValue;
        if(props.containsKey(key)){
            value=CastUtil.castBoolean(props.getProperty(key));
        }
        return value;
    }
}

